Commit Graph

5 Commits

Author SHA1 Message Date
David Sterba 4fc291a465 btrfs-progs: fix detection of accelerated implementation.
The build fails with crypto backends other than builtin, the
initializers cannot be reached as they're ifdef-ed out.  Move
hash_init_accel under the right condition and delete the
algorithm-specific initializers as they're used only by the hash test
and that can simply call hash_init_accel to set the implementation.

All the -m flags need to be detected at configure time and the flag used
for ifdef (HAVE_CFLAG_m*), not the actual feature defined by compiler as
the dispatcher function is not built with the -m flags.

The uname check for x86_64 must be dropped so on i386/i586 we can still
build accelerated version.

Signed-off-by: David Sterba <dsterba@suse.com>
2023-03-01 15:10:21 +01:00
David Sterba bbf703bfd3 btrfs-progs: crypto: call sha256 implementations by pointer
Change how sha256 implementation is selected. Instead of an if-else
check in the block processing function select the best version and assign
the function pointer. This is slightly faster.

At this point the selection is not implemented properly in
hash-speedtest so all results are from the fastest version. This will
be fixed once all algorithms are converted.

Signed-off-by: David Sterba <dsterba@suse.com>
2023-02-28 20:10:58 +01:00
David Sterba 6a7a0d8af8 btrfs-progs: crypto: add accelerated SHA256 implementation
Copy sha256-x86.c from https://github.com/noloader/SHA-Intrinsics, that
uses the compiler intrinsics to implement the update step with the
native x86_64 instructions.

To avoid dependencies of the reference code and the x86 version, check
runtime support only if the compiler also supports -msha.

Signed-off-by: David Sterba <dsterba@suse.com>
2023-02-28 19:49:30 +01:00
Johannes Thumshirn ae9f8bff30 btrfs-progs: add sha256 as supported checksumming algorithm
Add the definition to the checksum types and let mkfs accept it.

Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: David Sterba <dsterba@suse.com>
2019-11-18 19:20:40 +01:00
David Sterba 3a73bc1b37 btrfs-progs: move sha256 from tests to crypto/
The SHA256 is going to be used in the future, so this makes it a second
user and we also have the appropriate directory now.

Signed-off-by: David Sterba <dsterba@suse.com>
2019-11-18 19:20:02 +01:00